diff --git a/docker/build/README.md b/docker/build/README.md
index 7f6983b00c..e13ff5c1e5 100644
--- a/docker/build/README.md
+++ b/docker/build/README.md
@@ -25,6 +25,8 @@ The default **zookeeper** is created in the `docker-compose.yml`.
 
 Access the Web UI：http://192.168.xx.xx:12345/dolphinscheduler
 
+The default username is `admin` and the default password is `dolphinscheduler123`
+
 #### Or via Environment Variables **`DATABASE_HOST`** **`DATABASE_PORT`** **`DATABASE_DATABASE`** **`ZOOKEEPER_QUORUM`**
 
 You can specify **existing postgres and zookeeper service**. Example: